2021 Mercedes-Benz S Class Recall

On a small number of vehicles, a software problem could cause the emergency calling (eCall) system not to work properly when there's a crash or when the SOS button is pressed.

If the eCall system doesn't work in an emergency situation, there could be a delay in response from emergency services.

Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to update the communication module software.

On certain vehicles, the fuel delivery module could fail. If this happens, the engine may run rough or may not start. This could also result in a sudden loss of engine power while driving. Note: This is an expansion of Transport Canada recall 2023-353.

A sudden loss of engine power could increase the risk of a crash.

Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuel delivery module.

On certain vehicles, the fuel delivery module could fail. If this happens, the engine may run rough or may not start. This could also result in a sudden loss of engine power while driving.

A sudden loss of engine power could increase the risk of a crash.

Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuel delivery module.

On a small number of vehicles, the engine compartment firewall may not be sealed correctly. This could allow water to leak inside the vehicle. If this happens, electrical components could short circuit. This could also affect the Pre-Safe system or cause the vehicle not to start. Note: If this issue is present in your vehicle, you may notice wet carpets in the driver or passenger footwell and fogged windows.

A short circuit could cause emergency systems not to work, which could increase the risk of injuries in a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to reseal the front wall.

On certain vehicles, a software problem could cause the rearview camera image not to appear on the central display. Canadian regulations require the rearview image to display when the transmission is shifted into reverse gear.

A rearview camera image that does not display could reduce a driver's ability to see behind the vehicle while backing up. This could increase the risk of a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to update the MBUX multimedia system software.

On certain vehicles equipped with the emergency calling (eCall) system, the SIM card for the communications module could disable itself. If this happens, the eCall system would not work properly when there is a crash or when the SOS button is pressed.

If the eCall system does not work in an emergency situation, there could be a delay in response from emergency services.

Mercedes-Benz will notify owners by mail and send a wireless over-the-air software update to each vehicle. If the update cannot be completed successfully, you will be notified to schedule an appointment to have the update performed by a dealer.

On certain vehicles, the DISTRONIC driver assistance system might not detect when the driver removes their hands from the steering wheel. If the driver has a medical emergency (and is unable to drive or loses consciousness), the active emergency stop assist and emergency call functions would not activate. Note: This recall only affects vehicles equipped with a heated leather steering wheel.

If the active emergency stop and emergency call features do not work in an emergency situation, there could be an increased risk of a crash, and there could be a delay in response from emergency services.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to update the software for the hand detection system.

On certain vehicles, the control module for the taillamps may not work properly. As a result, the rear turn signals, rear hazard warning lights, and reverse lights may not work properly.

Turn signals or reverse lights that do not work properly could cause road users to be confused of the driver's intentions. Hazard lights that do not work properly could make the vehicle less visible. These issues could increase the risk of a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to update the rear lighting control module software.

On a small number of vehicles, the airbag control unit may not be properly attached to the vehicle . This could cause the airbag system not to work properly in a crash. It could also cause the airbags and/or seat belt pretensioners to deploy without a crash.

An airbag system that does not work properly could create an increased risk of injury in a crash. Airbags or seat belt pretensioners that deploy without a crash could create a risk of injury and could also increase the risk of a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the attachment bolts for the airbag control unit, and repair as necessary.

On certain vehicles, the occupant classification system (OCS) may not work properly due to a software error. This could cause the airbag system to turn off the passenger-front airbag, even if an adult is seated in the front passenger seat. Note: If this happens, an airbag system warning message will display on the instrument panel. Additionally, the passenger airbag status display will show the message "Passenger Airbag Off".

An airbag that is turned off could increase the risk of injury to a passenger in a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to update the airbag control unit software.

On a small number of vehicles, the nozzle of the in-tank fuel pump may not have been installed correctly. As a result, it could detach from the fuel pump. If this happens, the engine could suddenly lose power and stall while driving.

A sudden loss of engine power could increase the risk of a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the fuel system and replace the fuel tank, as necessary.

On certain vehicles equipped with the emergency calling (eCall) system, the communications module may temporarily lose power during a crash. If this happens, the wrong vehicle location may be transmitted through the eCall system. This could cause emergency responders to be sent to the wrong location.

If the eCall system sends out the wrong location after a crash, there could be a delay in response from emergency services.

Mercedes-Benz will notify owners by mail and send a wireless over-the-air update to each vehicle. If the update cannot be completed successfully, you will be notified to schedule an appointment to have the update performed by a dealer.

On certain vehicles, a software problem could cause the rearview camera image not to appear on the central display. Canadian regulations require the rearview image to display when the transmission is shifted into reverse gear.

A rearview camera image that does not display could reduce a driver's ability to see behind the vehicle while backing up. This could increase the risk of a crash.

Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealer to update the head unit software.